Form Validation in CodeIgniter? - php

Question

I am using form validation of CodeIgniter, it works fine but when, form validation fails, it does not display the validation errors, by using
<?php echo validation_errors();?>
I am using
function insertProduct(){
$this->load->library('form_validation');
$this->form_validation->set_rules('pname','ProductName','trimirequired');
if($this->form_validation->run()){
$this->addProduct();
}
else{
$this->load->model('inventory/stock');
}

Answer 1

In your view you should have something like (this example shows errors individually);
<?php echo form_error('p_name'); ?>
<label for="p_name">Product Name</label>
<input type="text" id="p_name" name="p_name" value="<?php echo set_value('p_name'); ?>" />

Answer 2

You need to tell the method in your controller to render a view on success/failure of the form validation.
If you change your insertProduct method to the following, it 'should' solve your issue.
function insertProduct(){
$this->load->library('form_validation');
$this->form_validation->set_rules('pname','ProductName','trimirequired');
if($this->form_validation->run()){
$this->addProduct();
$this->load->view('{name_of_your_view}');
} else{
$this->load->model('inventory/stock');
$this->load->view('{name_of_your_view}');
}
}
Where 'name_of_your_view' is the view that you've placed the validation_errors() code in.

Answer 3

This example from the CodeIgniter tutorial pages explains how to validated submitted data to display validation errors at the header of the form like you might expect:
http://codeigniter.com/user_guide/tutorial/create_news_items.html
The example code for the creation function looks like this:
public function create()
{
$this->load->helper('form');
$this->load->library('form_validation');
$data['title'] = 'Create a news item';
$this->form_validation->set_rules('title', 'Title', 'required');
$this->form_validation->set_rules('text', 'text', 'required');
if ($this->form_validation->run() === FALSE)
{
$this->load->view('templates/header', $data);
$this->load->view('news/create');
$this->load->view('templates/footer');
}
else
{
$this->news_model->set_news();
$this->load->view('news/success');
}
}
As others have said, though, you need to add a view to handle success and return them to the form to display errors on failure.

Answer 4

We can change the line containing following code:
$this->form_validation->set_rules('pname','ProductName','trimirequired');
to:
$this->form_validation->set_rules('pname','ProductName','trim|required');
if($this->form_validation->run($this) == false)
{
$this->addProduct();
}